The device (10) has a single guide sleeve (18) removably mounted at a handle (12). The guide sleeve comprises a central guide channel (30) for receiving an aiming wire (32), and a guide channel (34) for receiving another aiming wire. A central longitudinal axis of the guide channel is at a distance from a central longitudinal axis of the central guide channel and in parallel to the guide channels. A distal end (22) of the guide sleeve is arrangeable at a bone. A distal end (56) of an arm (48) is arrangeable at the bone, where the arm is projected from the handle.
